German censormania

What is really the problem with Germanys censors? The germans are notorically censoring and banning games and movies. A famous examples is the italian director Pier Paolo Passolinis anti-fascist movie "Salo o los 120 días de Sodoma" which was banned in 1975 and STILL is not allowed in Germany. On the gaming front the german censor authorities has been rabid the last years. The games "Carmageddon" and "Castle Wolfenstein" had to be changed to fit the censor authorities. Games like "Postal" and the new game "Dead Rising" for the X-box didn´t even pass the authorities sharp eyes. What is this? Not freedom of soeech and artistic freedom from governmental interfereance anyway. It looks like some of the manners from the late DDR still is alive and kicking.